Atlapedia Online
Kids and Teens, School Time, Social Studies, Geography - Atlapedia. Contains full color physical and political maps categorized by countries, world, and resources.
https://www.atlapedia.com/
World Flag Database: Welcome
Kids and Teens, School Time, Social Studies, Geography - World Flag Database. Large collection of information and pictures of each country in the world.
http://www.flags.ndirect.co.uk/